To make sure they did, the former secretary of state sent a copy of her most recent memoir “Hard Choices” to nearly all of her Republican potential rivals earlier this month.

“I have now sent each of them a copy of my book, ‘Hard Choices,'” Clinton said during a campaign stop at Strawberry Farm Bed and Breakfast in Muscatine, Iowa, on Tuesday. “There are so many of them, they could start a book club.”

Clinton and her aides came up with the idea shortly after the CNN Republican debate in Simi Valley, California. During the debate, Hewlett-Packard CEO and GOP presidential candidate Carly Fiorina slammed Clinton, saying that flying all over the world was an activity and not an accomplishment.

The book, which focuses on Clinton’s time as America’s top diplomat, was sent to every Republican candidate minus one: former Virginia Gov. Jim Gilmore, who wasn’t at the last debate.

It also came with a personalized note:

I understand that you and your fellow Republican candidates for president were questioning my record of accomplishments at your last debate, so I thought you might enjoy reading my book, Hard Choices.

From working to restore America’s standing in the world to bringing crippling sanctions to Iran to negotiating a ceasefire in Gaza, please enjoy all 596 pages of my time as secretary of state. With 15 candidates in the race, you’ve got enough people for a book club!

Trump’s package included a 24-bottle case of his own Spring Water, as well as “Make America Great Again” towels. And just to make sure he got the joke, Trump added a note that read, “Since you’re always sweating, we thought you could use some water. Enjoy!”

Photos of then Secretary of State Hillary Clinton checking her email went viral in 2011. When Clinton joined Twitter last month, she chose a shot like this for her profile page, quickly racking up 650,000 followers.

In December 2011 Hillary joyfully greeted Nobel Peace Prize laureate Aung San Suu Kyi in Burma. Suu Kyi led the fight against military rule in Burma, where she spent years under house arrest.

Hillary Rodham Clinton made her debut in politics back in 1974 during the Watergate Scandal as a member of the impeachment inquiry staff. She was a recent Yale Law School graduate and not yet married to Bill Clinton.

Hillary Clinton became a lightening rod on the 1992 campaign trail, drawing criticism for remarks that she could have "stayed home and baked cookies and had tea but what I decided to do was fulfill my profession" and that she was not a "some little woman standing by my man like Tammy Wynette."

In 1996, then First Lady HIllary Clinton was put on the cover of Time magazine, with the story depicting the truth about the Whitewater real-estate scandal.

Hillary Clinton delivers a speech on the Monica Lewinsky affair with her husband and former President Bill Clinton standing by her side.

After taking on two ads that she claims misrepresented her stance on healthcare plans, an enraged presidential candidate Hillary Clinton delivers a speech on the shameful tactics used by rival Barack Obama in 2008. "Shame on you, Barack Obama!"

After losing the race for the Democratic candidacy for the 2008 election, Clinton ended her campaign with a memorable speech. "Even though we were not able to shatter that highest, hardest glass ceiling this time, thanks to you, it's got about 18 million cracks in it, and the light is shining through like never before."

Alongside President Obama and other senior members of the White House staff, Secretary of State Hillary Clinton watches as the US Naval Seals take down terrorist Osama bin Laden on May 1, 2011.

After returning to work from hospitalization from a blood clot, then-Secretary of State Hillary Clinton received joke gifts from her colleagues to celebrate her return. She received a football jersey and helmet.

In January, Clinton delivered a fiery speech to Congress about the Benghazi attacks on U.S. soldiers.

In 2013, Hillary Clinton joined the Human Rights Campaign for same sex marriage. Her support for equal marriage was received as one of her biggest contributions to the campaign upon retiring as Secretary of State in February 2013.

1 of 13

A look at 10 of former First Lady's biggest moments in the White House, as Secretary of State and as Democractic candidate for president.

Photos of then Secretary of State Hillary Clinton checking her email went viral in 2011. When Clinton joined Twitter last month, she chose a shot like this for her profile page, quickly racking up 650,000 followers.